/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */


/**
 * A Test application that exercises the sample moudule. This is intented
 * to be a sample application for using xpcom standalone.
 */

#include <stdio.h>

#include "nsXPCOMGlue.h"
#include "nsXPCOM.h"
#include "nsCOMPtr.h"
#include "nsISample.h"
#include "nsIServiceManager.h"
#include "nsIComponentManager.h"
#include "nsIComponentRegistrar.h"

#define NS_SAMPLE_CONTRACTID "@mozilla.org/sample;1"

int
main()
{
  nsresult rv;

  XPCOMGlueStartup(nullptr);

  // Initialize XPCOM
  nsCOMPtr<nsIServiceManager> servMan;
  rv = NS_InitXPCOM2(getter_AddRefs(servMan), nullptr, nullptr);
  if (NS_FAILED(rv)) {
    printf("ERROR: XPCOM intialization error [%x].\n",
           static_cast<uint32_t>(rv));
    return -1;
  }

  nsCOMPtr<nsIComponentManager> manager = do_QueryInterface(servMan);

  // Create an instance of our component
  nsCOMPtr<nsISample> mysample;
  rv = manager->CreateInstanceByContractID(NS_SAMPLE_CONTRACTID,
                                           nullptr,
                                           NS_GET_IID(nsISample),
                                           getter_AddRefs(mysample));
  if (NS_FAILED(rv)) {
    printf("ERROR: Cannot create instance of component " NS_SAMPLE_CONTRACTID " [%x].\n"
           "Debugging hint:\n"
           "\tsetenv NSPR_LOG_MODULES nsComponentManager:5\n"
           "\tsetenv NSPR_LOG_FILE xpcom.log\n"
           "\t./nsTestSample\n"
           "\t<check the contents for xpcom.log for possible cause of error>.\n",
           static_cast<uint32_t>(rv));
    return -2;
  }

  // Call methods on our sample to test it out.
  rv = mysample->WriteValue("Inital print:");
  if (NS_FAILED(rv)) {
    printf("ERROR: Calling nsISample::WriteValue() [%x]\n",
           static_cast<uint32_t>(rv));
    return -3;
  }

  const char* testValue = "XPCOM defies gravity";
  rv = mysample->SetValue(testValue);
  if (NS_FAILED(rv)) {
    printf("ERROR: Calling nsISample::SetValue() [%x]\n",
           static_cast<uint32_t>(rv));
    return -3;
  }
  printf("Set value to: %s\n", testValue);
  char* str;
  rv = mysample->GetValue(&str);

  if (NS_FAILED(rv)) {
    printf("ERROR: Calling nsISample::GetValue() [%x]\n",
           static_cast<uint32_t>(rv));
    return -3;
  }
  if (strcmp(str, testValue)) {
    printf("Test FAILED.\n");
    return -4;
  }

  NS_Free(str);

  rv = mysample->WriteValue("Final print :");
  printf("Test passed.\n");

  // All nsCOMPtr's must be deleted prior to calling shutdown XPCOM
  // as we should not hold references passed XPCOM Shutdown.
  servMan = 0;
  manager = 0;
  mysample = 0;

  // Shutdown XPCOM
  NS_ShutdownXPCOM(nullptr);

  return 0;
}
